public class Circle {
    public double radius;
    
    public double getPerimeter() {
        return 2 * Math.PI * radius;
    }

    public double getArea() {
        return Math.PI * radius * radius;
    }

    public void showPerimeter() {
        System.out.printf("%.2f", getPerimeter());
    }

    public void showArea() {
        System.out.printf("%.2f", getArea());
    }
}
